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Information

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LLE10243 : Does a DLL have an own stack and heap?

Symptom:

You would like to have a bit more information about DLLs

Cause:

none

Solution:

When a program is started, it is loaded into memory. During this process, the program becomes a stack and a heap size. As long as the executable or dll is on disk, it does not have a stack or heap. A DLL is dynamically loaded in the same address space as the executable program. After it's loading it shares the stack and heap of the executable. So when a DLL function is called, the same stack is used as when a function in the program is called. This is the case in Windows and Linux although the binary format is different. Windows uses the PE format and Linux used the ELF format.

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